diff --git a/lib/ace/mode/php.js b/lib/ace/mode/php.js
index 87b70cbd..8e3ecd6c 100644
--- a/lib/ace/mode/php.js
+++ b/lib/ace/mode/php.js
@@ -70,7 +70,7 @@ oop.inherits(Mode, TextMode);
     );
 
        
-    this.lineCommentStart = ["#", "//"];
+    this.lineCommentStart = ["//", "#"];
     this.blockComment = {start: "/*", end: "*/"};
 
     this.getNextLineIndent = function(state, line, tab) {